Everything you need. Nothing you don't.
HIITTrack is a no-frills HIIT timer built by one developer who got tired of bloated fitness apps. It does one thing and does it well: helps you train smarter.
- Real-time intensity tracking Your phone's accelerometer measures effort at 50Hz. No heart rate strap, no Apple Watch — just your phone in your pocket.
- Exercise tagging "What did you just do?" — tap to label each round during rest. 14 built-in exercises, or add your own.
- AI-powered insights Were your burpees explosive enough? Did your plank wobble? Tailored feedback and rep estimates for every exercise type.
- Fully customizable Work intervals (10–180s), rest intervals (10–180s), total time (5–60 min). Audio cues, haptic feedback, and countdown beeps keep you on pace.
- Workout history & charts Every session saved. Intensity-by-round bars, per-exercise sparklines, mini charts on every history row.
- Zero data collection 100% on-device. No accounts, no cloud, no analytics SDKs. Your workouts stay on your phone.
One tap. 3-2-1-GO. That's it.
HIITTrack gets out of your way so you can focus on what matters: the workout. After you're done, the data is waiting.
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Hit START
Big button, animated 3-2-1 countdown with audio cues. No menus, no fumbling.
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Train
A live intensity meter pulses green → yellow → orange → red as you push harder. Every second is captured.
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Tag your exercises
During rest, tap what you just did — Burpees, Sprints, Plank, and 11 more — so every round is labelled.
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Review your insights
Round-by-round breakdowns, exercise-specific AI analysis, and charts that actually tell you something.
Real insights, not just numbers.
After your workout, HIITTrack analyzes every interval with exercise-specific intelligence. Because a plank and a sprint are two very different things.
"Your plank showed lateral movement in the last 10 seconds. Try squeezing your glutes and pulling your belly button toward your spine."
— Actual AI feedback from a plank interval
Why HIITTrack?
- No subscription BS. Pay once, own it forever. No "$3.99/month after your free trial" nonsense.
- No wearable required. Your phone's accelerometer does the heavy lifting. Leave the watch and chest strap in the drawer.
- No tracking, ever. No analytics, no crash reporters phoning home, no third-party SDKs hiding in the binary.
- Fast and offline. Works with no internet connection. No login screen. Open and train.
- Second-by-second data. The most granular workout data of any HIIT timer. 50Hz raw capture, 1Hz stored — every rep accounted for.
- Built by one person. Not a VC-backed startup optimizing for engagement metrics — just a developer who wanted a smarter timer.
- Respects your phone. Small binary, no background processes, no notification spam. Your battery thanks you.
Simple by design.
Clean screens, large numbers, nothing in the way when you're mid-workout.
Simple pricing.
One-time purchase
$6.99
Pay once. No subscription. No upsells. Future updates included while the app is actively maintained.
Ready to train smarter?
No sign-up. No trial period. No wearable required. Just download and start your first workout.
Download on the App StoreStay in the loop.
Sign up for launch updates and receive a free classic HIIT routine PDF – 4-week program, no equipment needed.